Finding the Fourth Proportional to 1,474.92, 2,036.43 and 978.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,474.92 : 2,036.43 = 978.59 : x
2. Step 2: Convert to fraction form
   1,474.92/2,036.43 = 978.59/x
3. Step 3: Cross multiply
   1,474.92x = 2,036.43 × 978.59
4. Step 4: Simplify right side
   1,474.92x = 1,992,814.96
5. Step 5: Solve for x
   x = 1,992,814.96/1,474.92
6. Step 6: Final answer
   x = 1,351.14